<template>
    <div class="login">
        <div class="login_box">
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <el-form ref="refs" :rules="rules" label-width="0px" class="login_form" :model="loginForm">
                <el-form-item prop="username">
                    <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
                </el-form-item>
                <el-form-item  prop="password">
                    <el-input prefix-icon="iconfont icon-3702mima" v-model="loginForm.password" type="password"></el-input>
                </el-form-item>
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="handcz">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      rules: {
        // 验证用户名
        username: [
          { required: true, message: '请输入用户昵称', trigger: 'blur' },
          { min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码
        password: [
          { required: true, message: '请输入用户密码', trigger: 'blur' },
          { min: 5, max: 16, message: '长度在 5 到 16 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    handcz () {
    //   console.log(this)
    //   console.log(this.$refs)
    // 重置表单,利用ref 他的值就是实例对象
      this.$refs.refs.resetFields()
    },
    login () {
      this.$refs.refs.validate(async valid => {
        console.log(valid)
        if (valid) {
          // data:res  是把返回的真实数据给了res
          // await async  修饰成一个异步得请求函数 把返回的数据转换成正常的数据
          const { data: res } = await this.$http.post('login', this.loginForm)
          console.log(res)
          if (res.meta.status !== 200) {
            this.$message.error('登录失败')
          } else {
            this.$message.success('登录成功')
            // 将token保存到客户端的 sessionStorage 中
            window.sessionStorage.setItem('token', res.data.token)
            // 使用编程式导航跳转到/home
            this.$router.push('/home')
          }
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: white;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}
.avatar_box{
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }
}
.btns{
    display: flex;
    justify-content: flex-end;
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
</style>
